Table 6. Spinal canal CSA/vertebral body CSA ratio.
| Variable | Mean (SD) | P value | |
|---|---|---|---|
| Males (N=540) | Females (N=540) | ||
| L1 | 0.23 (0.05) | 0.28 (0.06) | <0.0001 |
| L2 | 0.20 (0.05) | 0.25 (0.05) | <0.0001 |
| L3 | 0.18 (0.04) | 0.21 (0.05) | <0.0001 |
| L4 | 0.18 (0.04) | 0.21 (0.05) | <0.0001 |
| L5 | 0.20 (0.05) | 0.21 (0.05) | 0.0002 |
| L1–L5 | 0.20 (0.04) | 0.23 (0.04) | <0.0001 |
Spinal canal CSA/vertebral body CSA ratio. Mean spinal canal CSA/vertebral body CSA ratio in males and females at each level from L1 to L5 and overall for L1–L5. All statistically significant differences are bolded. SD, standard deviation; CSA, cross-sectional area.